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Summary of Contents for EPC EPC9112
- Page 1 Demonstration System EPC9112 Quick Start Guide 6.78 MHz, ZVS Class-D Wireless Power System using EPC2007C / EPC2038...
- Page 2 QUICK START GUIDE Demonstration System EPC9112 DESCRIPTION The EPC9112 wireless power demonstration system is a high efficiency, The amplifier board is equipped with a pre-regulator that limits the DC A4WP compatible, Zero Voltage Switching (ZVS), Voltage Mode class-D current of the supply to the amplifier. As the amplifier draws more current,...
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Page 3: Mechanical Assembly
ZVS Timing Adjustment Setting the correct time to establish ZVS transitions is critical to achieving The assembly of the EPC9112 Wireless Demonstration kit is simple and high efficiency with the EPC9507 amplifier. This can be done by selecting shown in Figure 1. The source coil and amplifier have been equipped with the values for R71, R72, R77, and R78 respectively. -
Page 4: Quick Start Procedure
) are doubled. OSSQ QUICK START PROCEDURE The EPC9112 demonstration system is easy to set up and evaluate the 8. Once operation has been confirmed, adjust the main supply voltage performance of the eGaN FET in a wireless power transfer application. -
Page 5: Thermal Considerations
Please con- When inserted the amplifier operates in the single-ended mode. Using tact EPC should the tuning of the coil be required to change to suit an external pull down with floating collector/ drain connection will have specific conditions so that it can be correctly adjusted for use with the the same effect. - Page 6 Shunt removed Matching Half / Full Bridge Mode Jumper Figure 7: Proper Connection and Measurement Setup for the Device Board Figure 6: Proper Connection for the Source Coil | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017...
- Page 7 Q1 turn-o Q2 turn-o Q2 turn-on Q1 turn-on Partial Partial time time Shoot- Shoot- through through ZVS + Diode ZVS + Diode Conduction Conduction Figure 9: ZVS Timing Diagrams EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 |...
- Page 8 909k Ω Panasonic ERJ-3EKF9093V 300k Ω Panasonic ERJ-2RKF3003X 45.3k Ω Panasonic ERJ-2RKF4532X R60, R61 2.2 Ω Yageo RC0402JR-072R2L 24 mW, 1 Ω Susumu PRL1632-R024-F-T1 (continued on next page) | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017...
- Page 9 Fairchild NC7SZ08L6X 5.0 V, 250 mA DFN Microchip MCP1703T-5002E/MC EPC would like to acknowledge Würth Electronics (www.we-online.com/web/en/wuerth_elektronik/start.php) and KDS Daishinku America (www.kdsamerica.com) for their support of this project. Table 4: Bill of Materials - Source Coil Item Reference Part Description...
- Page 10 H Sig2 Logic Supply Regulator 100 nF, 25 V 40 V, 30 mA SDM03U40 Local Fiducials Figure 10: EPC9507 -ZVS Class D Amplifier Schematic Rev 3.0 10 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017...
- Page 11 QUICK START GUIDE Demonstration System EPC9112 Figure 11: EPC9507 Pre-Regulator Schematic EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017 | | 11...
- Page 12 56 pF 2.7 V, 250 mW 33 V, 250 mW Receive Indicator Over-Voltage Indicator > 4 V > 36 V Figure 13: Category 3 Device Board Schematic 12 | | EPC – EFFICIENT POWER CONVERSION CORPORATION | WWW.EPC-CO.COM | COPYRIGHT 2017...
- Page 13 Demonstration Board Warning and Disclaimer The EPC9112 board is intended for product evaluation purposes only and is not intended for commercial use. Replace components on the Evaluation Board only with those parts shown on the parts list (or Bill of Materials) in the Quick Start Guide. Contact an authorized EPC representative with any questions.
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